What is BGP EVPN and where is it used?

BGP EVPN (RFC 7432) — uses MP-BGP to advertise MAC and IP addresses (instead of just IP prefixes). Primary use: VXLAN-based datacentre fabrics. Replaces older flood-and-learn approaches with control-plane-driven learning. Cisco implementations: ACI fabric, Nexus 9K with VXLAN. Major use case in modern Bangalore datacentres — every cloud service provider's underlay uses EVPN-VXLAN.

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What is BGP EVPN and where is it used?

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